The present invention relates to a composition formed of a hot melt adhesive having a colour-forming compound admixed therein. The invention further relates to a substrate or multi-layer substrate construction having the composition applied thereon or therein, and methods of forming colour and/or an image on and/or within the substrate or multi-layer substrate construction using said composition.

Provided is a thermosensitive recording medium including a support and a thermosensitive recording layer disposed on or above the support. The thermosensitive recording layer include a compound represented by General Formula (1) and a styreneacryl resin, where, in General Formula (1), R.sub.2 is a C1-12 straight-chain, branched-chain, or alicyclic alkyl group, C7-12 aralkyl group that is substituted with a C1-12 alkyl group, a C1-12 alkoxy group, a C6-12 aryl group or a halogen atom, or a C6-12 aryl group that is unsubstituted or substituted with a C1-12 alkyl group, a C1-12 alkoxy group, a C6-12 aryl group, or a halogen atom, where two or more R.sub.2 may be identical to or different from each other; and A.sub.1 is a hydrogen atom or a C1-4 alkyl group, where two or more A.sub.1, may be identical to or different from each other.

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The present invention relates to pigments which comprise niobium-doped titanium dioxide as well as a layer encapsulating the niobium-doped titanium dioxide, to polymer materials containing same and to the use of said pigments as laser absorbing additive in products comprising at least one polymer material and said encapsulated niobium-doped titanium dioxide containing pigments.

A filament material and a method for producing the same is disclosed. For example, the filament material includes a polymer resin that is compatible with an extrusion based printing process and a marking additive that allows selective portions of the filament material to change color when exposed to a light, wherein the marking additive is added to approximately 0.01 to 25.00 weight percent (wt %).

A method for producing a security device (1) comprising a first colour pattern (A) visible along an associated viewing axis () and at least one second colour pattern (B) visible along an associated viewing axis (), comprising the following steps:assembling an image layer (4) suitable for forming at least one colour pattern (A, B) by laser etching, on a support (3),laser etching the first colour pattern (A) in the image layer (4), along the associated viewing axis () of same, in such a way that it can be seen through a lens array (7),for each of said at least one second colour pattern (B), laser etching said at least one second colour pattern (A) in the image layer (4), along the associated viewing axis () of same, in such a way that it can be seen through a lens array (7). A security device (1) obtained by said method.

Embodiments of present disclosure discloses system and method for performing laser marking. Initially, a first image of a region to be laser marked may be captured and compared with a predefined image of a predefined pattern to be laser marked on the region. By the comparison, a first score may be computed. The first score may indicate marking present in the region to be laser marked, in relation to the predefined image. Further, a co-ordinate data of a configuration file, relating to the predefined pattern, in the laser marking system may be modified based on the first score, for performing the laser marking on the region.

A method for uniquely identifying tubes may include programming a motion of a laser relative to a tube pad printed with a mixture of ink and a laser sensitive material and exposing the laser-sensitive material to the laser to colorimetrically transform the material and reveal a unique identifier. A method of coating tubes includes plasma or flame treating the tube and mixing a laser-sensitive material with ink to form a mixture to pad print onto the tube. A system for identifying tubes coated with laser-sensitive material includes a laser mounted in translational relationship to a stage, a camera positioned to capture an image of a tube on a stage, a processor that receives the image and translates the laser relative to the stage in order to position the laser for marking the tube, and a laser controller to move the laser in order to mark the tube.

A laser processing device is provided, including: a laser beam irradiating apparatus irradiating a laser beam to a marked object; an angle adjusting apparatus connected with the laser beam irradiating apparatus to adjust an irradiation angle of the laser beam; a photographing apparatus photographing an area where the laser beam is irradiated; and a guide beam reflective mirror positioned on a movement path of the laser beam, in which the laser beam is a processing laser beam or a guide beam which marks the marked object.

Laser-markable cable layers for a cable are provided. The laser-markable cable layers include an inner layer formed of a first polymer material and an outer layer formed of a second polymer material and a laser-marking compound. The outer layer is about 0.5% to about 50% of the thickness of the inner layer. The laser-markable cable layers surround a wire or cable core. Methods of marking a cable having laser-markable cable layers are also provided.

The present invention relates to laser-markable and laser-weldable polymeric materials which are distinguished by the fact that they comprise, as laser absorber, at least one copper-doped zinc sulfide.